Electrically-heated comb.



E. SCHWARTZ.

ELEGTRIGALLY HEATED COMB.

APPLICATION FILED AUG. 15, 1912.

l atented Feb. 4, 1913.

UNiTnn srarns Parana onnion.

EDWARD SCHWARTZ, OF CHICAGO, ILLINGIS, ASSIGNOR '10 WM. E. SLAUGHTER 00., 0F

5 CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ELECTRICALLY-I-IEATED COMB.

To all whom it may concern:

Be it known that I, EDWARD SCHWARTZ, a citizen of the United States of America, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Eleotrically-Heated Combs, of which the following is a specification.

The main objects of this invention are to provide a simple, improved and comparatively inexpensive form of electrically heated hair drier and comb.

Anillustrative embodiment of this invention is shown in the accompanying drawings in which- Figure 1 is a perspective view. Fig. 2 is a longitudinal section taken on the line AA of Fig. 3. Fig. 3 is a transverse section taken on the line BB of Fig. 2. Fig. 4 is a detail of the electrical connection between the heating element and the 'con ductors leading to the source of electricity. Fig. 5 is a detail of the collar which prevents relative rotation of the comb and handle. I

' In'the construction shown in the drawings, the comb comprises inner and outer tubular casings 1 and 2, the inner casing 1 extending beyond the outer casing 2 at its inner end and having the handle 3 mounted thereon and rigidly'connected at a where the casing l is expanded; A sleeve or collar 5 is interposed between the outer casing 2 and the handle 3 and has a pair of shoulders (3 spaced to provide a notch between them, and a pair of prongs 7,.adapted to extend into the handle for preventing the relative rotation. The outer casing 2 has rigidly mounted thereon the tooth section of the comb 8 and is preferably made of a strip of sheet metal bent to cylindrical form as shown in Fig. 3, and having its longitudinal edge portions brought together so as to stand outward in the form of a single projecting rib or wing 9. These edge portions are perforated at 10. The tooth section .8 is constructed preferably of softer metal than the casing 2, such, for example, as aluminum, and has a pair of projecting back flanges 12 which are spaced apart to provide a groove or recess between them for the reception of the rib 9. When the projecting rib 9 is inserted into the groove, a heavy pressure is exerted against the outer faces of the flanges 12 to force a portion of the Patented Feb. 4, 1913.

Application filed Augustli, 1912 Serial No. 715,204.

relatively softer material of the flanges into the openings 10 and thereby rigidly bind the sections together.

The heating element comprises a central metal reinforcing rod 13 upon which are slipped two tubes 14 and 15 of lava or other suitable insulating material, and a resistance coil 16 of fine wire which is wound on the tubes. -The coil is more closely wound on. the tube 14 than on the tube 15 for obvious reasons. lVrappings or sleeves of insulating material 17 space the coil 16 from the casing 1. The terminal port-ions 18 and 19 of the winding are connected to the con- .ductors 01" the cord 20 within the hollow handle 3, the connection comprising a rectangular block 21 of insulating material having thereon two binding posts 22 and 23 whereby the connections are made. This block has transverse bores for the posts and a longitudinal bore extending inward from one end to meet the adjacent transverse bore. A bushing 24 of insulating material locked in place by a set screw 25 prevents withdrawal or lengthwise movement of the heater.

The outer ends of the casing 1 and 2 are closed by an ornamental plug 26.

In assembling the heater, one end portion 19 of the resistance wire is first threaded throughthe tubes l t and 15; the rod is inserted into the tubes alongside of the resistance wire and the coil is then wound on the exterior of the tubes. Then the wrappings 17 are placed in position and finally the connection to the cord 20 is made. This involves first threading the wire 19 into the longitudinal bore and out through the adjacent transverse bore of the block 21, then inserting the rod 13 into the longitudinal bore beside the .wire and finally fastening all of the wires by the binding posts as shown. The post 23 secures the end portion 19 of the coil, the correspondin conductor terminal of the cord and also 0 amps the rod by compressing the block 21.

To operate the device the socket plug 30 is screwed into a lamp socket in the usual manner. The current being then turned on operates the heater which transmits the heat through the casings to the teeth 8 of the comb, the coil being so proportioned as to prevent overheating.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of the invention as defined by the following claims.

I claim 1. In a device of the class described, the combination of a casing; a heating element therein comprising a tube of insulating material; a reinforcing rod extending lengthwise through said tube; a resistance coil Wound upon said tube, said resistance coil having one of its terminal portions threaded through said tube beside said rod; and a terminal block of insulating material having a longitudinal bore for the reception of said rod and terminal portion of the coil, and having a transverse aperture intersecting the first, and a binding post in said transverse aperture adapted to complete an electrical connection to said coil and simultaneously rod.

handle adapted to abut 2. In a device of the class described, the combination of a casing; a tubular handle rigidly mounted on said casing; a heating element adapted to be inserted in said casing comprising a tube of insulating material having a bore throughout its entire length; a resistance coil wound upon said member of insulating material having one of its terminal end portions threaded entirely through said. bore from end to end; a block of insulating material mounted in said said tube and having a longitudinal opening extending partly through said block adapted toregister with the bore in said tube and adapted to have said terminal end portion threaded through said opening; a pair of binding posts mounted on said block of insulating material for the terminals of said resistance coil; a reinforcing rod adapted to be inserted in the bore of said tube of insulating material, and into said longitudinal opening in said block of insulating material; and means for connecting said terminals with a source of electricity.

3. In a device of the class described, the

combination of a casing having a comb mounted thereon; a heating element therein comprising a tube of insulating material; a reinforcing rod extending lengthwise through said tube; a resistance coil wound upon said tube, said resistance coil having one of its terminal portions threaded through said tube beside said rod; and a compress said block to secure said the inner end of.

terminal block of insulating material having a longitudinal bore for the reception of said rod and terminal portion of the coil, and having a transverse aperture intersecting the first; and a binding post in said transverse aperture adapted to complete an electrical connection to said coil and simultaneously compress said block to secure said rod.

4:. An electrically heated comb comprising a comb sectlon having a tubular back; a-

handle rigidly secured to said comb section; a heating element extending through said handle and said tubular section and comprising a tube of insulating material having a resistance coil winding thereon; a reinforcing rod extending through said tube, said resistance coil having one of its terminals extending along said reinforcing rod within said tube; and means the terminals of said resistance coil with a source of electricity.

5. Ina device of the class described, the combination of inner and outer casing sections; a tooth section; a heating elementin said inner casing, and a handle mounted on said inner casing, said outer section com prising a strip of metal bent to form a cylindrical member having a pair of projecting wings, said wings having inwardly abutting faces and having transverse openings therein, said toot-h section having upwardly disposed flanges extending lengthwise thereof to provide a groove between them to receive said projecting wings, and a portion of the material of said flanges being pressed into said holes for holding said casing and said tooth section rigidly to gether. v v

6. In a device of the class described, the combination of a casing; a heating element housed within said casing; a comb mounted on said casing and comprising a hollow back of tubular form and having a longitudinal rib thereon, said rib being recessed transversely; and a tooth section having a grooved back embracing said rib and having the material of said grooved back compressed so as to be forced into the transverse recesses for rigidly comiect-ing said comb and said hollow back together.

Signed at Chicago this 9th day of August 12 EDWARD SCHWARTZ. Witnesses I EUGENE A. RUMMLER, EDWIN PHELPS.

for connecting 

